Baked macaroni and cheese is the best as far as I'm concerned. The crispy top and edges, the extra melty cheese, the sound it makes when it comes out of the oven.
And it's super easy to do.
Preheat the oven to 425 F
Fill a 9x9 baking dish with macaroni and cheese
Sprinkle a couple of handfuls of breadcrumbs over the top
Bake for 20 minutes, or until the top is browned and crispy